BMW doorlocks

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=43095
Printed Date: May 10, 2024 at 11:33 AM

Topic: BMW doorlocks

Posted By: Curtis123
Subject: BMW doorlocks
Date Posted: November 16, 2004 at 12:47 AM

I am trying to connect a -500ma output from the alarm doorlock module to a 96 BMW Z3. The lock wires will stay +12volts when locked and ground at rest, and the unlock +12 when unlocked, ground at rest. I need to now how to hook up some relays to try and make this work with the alarms keyless. Any suggestions?

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Curt

Replies:

Posted By: cgalvin29
Date Posted: November 16, 2004 at 2:26 AM

you need to change the polarity of the doorlocks from Negative trigger to positive trigger you will need two relays one for lock one for unlock.

it will go like this.

Pin 86 - Door lock/unlock wire from alarm
Pin 85 - 12+
pin 87 - 12+
Pin 30 - To Door lock/unlock wire on car

Posted By: Curtis123
Date Posted: November 16, 2004 at 3:34 AM

I believe that was one of the many ways I tried. Does this not just provide a "pulse" to the door locks? Does this system not need to some how convert from 12volt to a ground status, or will the "pulse" be enough to open it. I noticed after your reply that the alarm may have been set to a single .75 second pulse. Should I program it to the 3 second pulse instead.

Thanks

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Curt

Posted By: rudbwoy69camaro
Date Posted: November 16, 2004 at 3:01 PM

Here's some info when I was install a Matrix RS3 in a 318ti:

https://home.att.net/~voerman/

https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1998&make=BMW&model=318&ID=129&type=Alarm

https://www.carsound.com/UBB/ultimatebb.php?ubb=get_topic;f=3;t=001725#000000

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